package com.syt.cart.vo;

import lombok.Data;

import java.math.BigDecimal;
import java.util.List;

/**
 * 购物车
 * 需要计算的属性,必须重写他的get方法,保证每次获取属性都会进行计算
 */

public class Cart {
    List<CartItem> items;
    private Integer countNum;//商品数量
    private Integer countType;//商品类型
    private BigDecimal totalAmount; //商品总价
    private BigDecimal reduce = new BigDecimal("0");//商品减免价格

    public List<CartItem> getItems() {
        return items;
    }

    public void setItems(List<CartItem> items) {
        this.items = items;
    }

    public Integer getCountNum() {
        int count=0;
        if (items!=null && items.size()>0){
            for (CartItem item : items) {
                count+=item.getCount();
            }
        }
        return count;
    }



    public Integer getCountType() {
        int count=0;
        if (items!=null && items.size()>0){
            for (CartItem item : items) {
                count+=1;
            }
        }
        return count;
    }



    public BigDecimal getTotalAmount() {
        BigDecimal amount = new BigDecimal("0");
        //计算购物项总价
        if (items!=null && items.size()>0){
            for (CartItem item : items) {
                if (item.getCheck()){
                    BigDecimal totalPrice = item.getTotalPrice();
                    amount =  amount.add(totalPrice);
                }

            }
        }
        //2.减去优惠总价
        return amount.subtract(getReduce());
    }



    public BigDecimal getReduce() {
        return reduce;
    }

    public void setReduce(BigDecimal reduce) {
        this.reduce = reduce;
    }
}
